GRE Exam Numerical Ability Number System

What are the greatest and smallest positive differences between any of the factors of 210? A) 103 and 1 B) 209 and 0 C) 210 and 1 D) 103 and 11 E) 209 and 1

Read Solution (Total 1)

The factors of 210 are (1,210),(2,105),(3,70),(5,42),(7,30),(10,210),(14,15).
The greatest difference is 210-1=209
The Smallest positive difference is 15-14=1
Therefore Option (E) is the correct option.
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GRE Other Question

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